The Asse 1022 Dual Check Valve is a compact, code-aware solution for potable water backflow protection. It helps prevent contaminants and corrosive substances, such as carbonic acid, from entering drinking water. Approved devices are essential for safeguarding potable supplies and following local and national codes.
Asse 1013
Backflow preventer manufacturers, including Watts, make devices that are built to meet ASSE performance requirements and recognized certifications. These may include NSF/ANSI 61 and UL/FM approvals. Those credentials help verify material safety, pressure durability, and overall assembly performance. While some jurisdictions require higher-protection assemblies, the Asse 1022 can serve as a reliable low-hazard option where allowed.
The Asse 1022 Dual Check Valve is valued for its small footprint, simple installation, and low maintenance costs. This guide explains how Asse 1022 devices compare with higher-protection standards such as Asse 1013. It also outlines selection, installation, maintenance, and compliance steps so the unit can meet plumbing-code expectations and industry guidance.
Understanding Backflow And How Dual Check Valves Help
Backflow is a significant threat to water systems because it allows treated water to move backward. That backward flow may carry contaminants into potable lines and reduce the safety of drinking water. Water authorities and adopted plumbing codes require backflow protection to help prevent this kind of contamination.
Two main hydraulic causes lead to backflow incidents. Backsiphonage occurs when supply pressure falls, creating suction that can draw water in reverse. Backpressure happens when downstream pressure exceeds supply pressure and forces water in the wrong direction. Knowing the difference between backsiphonage and backpressure matters because each condition can call for a different type of protection.
Residential cross-connections often involve irrigation systems, garden hoses, boilers, and chemical injectors. Commercial facilities may also include booster pumps, closed-loop HVAC systems, process equipment, and similar connections. Without the right device, these connections may become pathways for pollutants or unwanted substances.
Dual check valves, including the Asse 1022 model, are designed for low-hazard protection. They are used where reverse flow might affect taste, odor, or water quality without creating a direct health hazard. An Asse 1022 Backflow Preventer can be a compact solution for approved low-hazard applications described by plumbing codes and water authorities.
Correct selection and installation depend on the applicable codes, listings, and standards. ASSE performance requirements and ANSI-accredited development support product acceptance. Installers must follow local plumbing code language, including references such as the 2018 UPC and AWWA M-14, when installing Asse 1022 devices.
Typical approved uses include residential irrigation, HVAC makeup lines, and some commercial low-hazard cross-connections. When the hazard level is higher, authorities typically require a more protective assembly.
| Problem | Typical Cause | Recommended Protection |
|---|---|---|
| Backsiphonage | Negative supply pressure caused by line breaks, mains work, or heavy demand | Approved Asse 1022 device where allowed, or an air gap for stricter protection |
| Backpressure | Downstream pressure from pumps, tanks, or thermal expansion | Dual check protection for low risk, or reduced-pressure protection for high risk |
| Risk to potable water quality | Irrigation fertilizer, boiler treatment chemicals, or process fluids | Classify the hazard and use Asse 1022 or a higher-protection assembly |
How Backflow Occurs In Plumbing Systems
Backflow is the backward movement of water from any source into the public supply. It may be caused by negative supply pressure, backsiphonage, or excess downstream pressure. Both conditions can introduce contaminants and threaten potable water quality.
Why Dual Check Valves Suit Low-Hazard Protection
A dual check valve uses two separate check mechanisms inside a single valve body. That built-in redundancy helps protect low-hazard cross-connections from reverse flow. Asse 1022 devices meet performance criteria for nuisance-level risks and are common where codes allow double-check assemblies.
Asse 1022 Dual Check Valve
The Asse 1022 Dual Check Valve is a compact backflow device designed for low-hazard potable water protection. It uses two independent spring-loaded checks arranged in series. That arrangement helps stop reverse flow and gives the device a second sealing point. It also supports serviceability while reducing contamination risk during pressure changes, brief backpressure events, or short disruptions.
Key Features And Functional Overview
Spring-loaded checks provide positive closure under changing flow and pressure. Many units are built with serviceable internals, replaceable seats, or removable parts. This design reduces maintenance time and lifecycle costs.
Manufacturers produce Asse 1022 units in materials such as bronze, brass, corrosion-resistant alloys, and engineered plastics. Available sizes are designed to match common pipe diameters, pressure ratings, and potable-water system requirements.
Built-in test ports and compact bodies support quick installation and routine inspection. An Asse 1022 Backflow Preventer can fit into tight locations where larger backflow assemblies may not be practical. It meets flow requirements for typical low-hazard applications.
Standards And Certifications That Support ASSE 1022 Devices
ASSE standards establish baseline performance tests and functional thresholds. Those tests are used to verify dependable operation under defined conditions. Many listed products exceed minimum requirements, which may reduce failure risk and support longer maintenance intervals.
NSF/ANSI 61 certification confirms materials are safe for drinking water and helps prevent harmful contaminant leaching. UL/FM approvals validate durability and performance under pressure and stress testing. This gives specifying engineers additional assurance.
When combined with ANSI-accredited development, these approvals improve the Asse 1022 Dual Check Valve’s acceptance in plumbing codes and project specifications. For project teams seeking verified material safety and tested performance, ASSE 1022 features, NSF/ANSI 61, and UL/FM marks create a strong compliance package.
ASSE 1022 Compared With ASSE 1013, ASSE 1012, And ASSE 1024
This section compares common backflow-protection options so the device can be matched to the hazard level and code requirement. It explains practical differences among RPZ assemblies, double-check devices, and other dual-check products used in U.S. plumbing systems.
Device selection should start with a clear hazard-level assessment. ASSE 1022 double-check assemblies suit low-hazard services such as irrigation and some HVAC makeup lines. In contrast, Asse 1013 RPZ devices are intended for high-hazard cross-connections where contamination could threaten health. Asse 1024 applies to reduced-pressure principle devices used where severe contamination risk may exist. Asse 1012 may apply when local rules call for specific dual-check devices or service-line configurations.
How ASSE 1022 Differs From ASSE 1013 And ASSE 1024 Devices
ASSE 1022 double-check devices rely on two check valves, and where applicable shutoff valves, to control backflow in low-hazard uses. ASSE 1013 RPZ devices include a relief valve that vents to atmosphere when internal pressure drops, providing a higher safety margin. Asse 1024 reduced-pressure principle devices use the same relief concept but apply to a broader set of severe contamination risks.
Testing frequency and complexity differ between these products. RPZ units under Asse 1013 require more rigorous annual and post-event testing with relief valve verification. Double-check assemblies under ASSE 1022 require periodic testing to confirm both checks operate, with simpler procedures than RPZ testing.
When ASSE 1012 And Other Dual-Check Standards Apply
Asse 1012 covers requirements for selected dual-check configurations used in low- or moderate-hazard applications. Choose this standard when local code or the water authority allows a dual-check format but requires a recognized standard beyond ASSE 1022.
Code requirements differ from one jurisdiction to another. Many municipalities following the 2018 UPC require ASSE 1013 RPZ for high-hazard cross-connections. Utilities may accept ASSE 1022 in low-hazard cases or require Asse 1012-certified dual-check devices for certain service lines. Always confirm requirements with the local water authority before installation.
| Device Feature | ASSE 1022 | Asse 1013 Reduced Pressure Zone | Asse 1024 | Asse 1012 Dual-Check Standard |
|---|---|---|---|---|
| Primary use | Low-hazard irrigation and selected HVAC makeup lines | High-hazard cross-connections and health-risk protection | Serious contamination threats requiring reduced-pressure protection | Specific dual-check uses allowed by local authority |
| Relative protection | Low hazard | Higher protection level | High | Low or moderate hazard |
| Atmospheric relief | No | Required relief valve | Includes reduced-pressure relief valve | Not typically included unless the product standard specifies it |
| Inspection requirement | Periodic testing of both checks | Annual and post-event testing with relief verification | Regular testing with relief-valve checks | Periodic testing per authority rules |
| Usual installations | Low-hazard cross-connections where allowed | High-hazard systems involving toxic or harmful fluids | Severe contamination sources where health impact is possible | Service-line applications where dual-check protection is accepted |
| Code preference | Often allowed for low-hazard applications | Commonly required for high-hazard conditions | Required for serious contamination threats | Applied when the authority requires this dual-check standard |
When comparing ASSE 1022 with RPZ assemblies, consider the hazard level, safety margin, and testing burden. RPZ versus double-check decisions depend on hazard assessment, local code, and water authority rules. When in doubt, choose the higher protection level specified by the authority having jurisdiction.
Installation, Maintenance, And Code Compliance
Proper Asse 1022 installation begins with thorough planning. Place dual check valves in an easily accessible area and follow the manufacturer’s orientation guidelines. Leave adequate clearance for service access, testing ports, shutoffs, and unions. This lets certified testers access fittings without unnecessary disassembly.
Follow good piping practices to avoid introducing new hazards. Avoid installing devices where downstream cross-connections could undermine the protection. Install shutoffs, unions, and drain provisions according to manufacturer instructions and local codes. Keep unions and test cocks accessible for inspections, service work, and backflow testing.
Maintenance intervals are usually determined by local regulations, water authority rules, and site requirements. Many areas require annual inspections and backflow tests by certified professionals. Detailed records of service and test results are important for proving compliance during audits and permit reviews.
Certified testers provide documented evidence that satisfies most regulatory requirements. AWWA M-14 can be used as a reference for inspection, maintenance, and backflow-prevention practices. Following these guidelines can reduce downtime and detect wear before leaks or failures occur.
Choose devices with recognized listings to simplify approval. Products with ASSE approvals and NSF/ANSI 61 installation ratings are often accepted more readily by plumbing inspectors. UL/FM compliance may also be important for commercial, industrial, or fire-protection connections that require third-party recognition.
Before installation, learn the applicable plumbing code edition and water authority rules in your area. Certain jurisdictions may require an RPZ rather than a dual check valve. Confirm the permit process and make sure the chosen Asse 1022 installation meets local standards to avoid delays and rework.
Establish a consistent record-keeping routine. Store manufacturer cut sheets, test certificates, and repair invoices with a map of the device location. This makes future inspections easier and supports clear compliance during regulatory reviews.
Where To Buy And Product Selection Guidance
Selecting the right device requires matching pipe size, pressure rating, material, and system demand. Confirm that the Asse 1022 Dual Check Valve matches the pipe diameter and peak-flow requirement. Also compare pressure ratings with maximum working pressure and expected surge conditions.
Material compatibility is a key consideration in potable-water systems. Choose brass, bronze, or NSF/ANSI 61-certified plastics to avoid corrosion or leaching. Review the manufacturer’s chemical-resistance data for local water chemistry.
Verifying certifications can make approval and inspection easier. Confirm that the product lists ASSE 1022 compliance and NSF/ANSI 61 certification. If the local authority requires UL or FM approvals, verify those markings before buying.
Supplier reputation matters when purchasing an ASSE 1022 device. Authorized dealers can provide genuine products, documentation, and warranty assistance. Installation Parts Supply is a reputable distributor that stocks certified units and can help with model selection.
Warranty coverage and pricing rules can affect the final purchase cost. Review manufacturer warranty limits and any MAP rules that hide prices online. Some stores require cart checkout to reveal final pricing while preserving full warranty through authorized sales channels.
Choose Materials
- Match pipe size and flow to the Asse 1022 Dual Check Valve model.
- Use NSF/ANSI 61-certified components for potable-water systems whenever required or available.
- Check the Asse 1022 Backflow Preventer pressure rating and surge tolerance before installation.
Trusted Suppliers
- Purchase from certified or authorized dealers so documentation is available for inspections.
- Choose vendors that offer sizing support and warranty handling.
- Installation Parts Supply commonly offers certified stock and practical model-selection guidance.
| Selection Point | What to Verify | Why It Helps |
|---|---|---|
| Pipe size and flow | Pipe size, peak GPM, and manufacturer sizing chart | Helps avoid pressure drop and supports correct function |
| Material compatibility | Corrosion-resistant materials and potable-water certifications | Protects potable water quality and resists corrosion |
| Working pressure rating | Manufacturer pressure limits and site surge conditions | Ensures safety under normal and peak conditions |
| Compliance markings | ASSE listing, NSF/ANSI 61, and UL/FM marks where needed | Simplifies permitting and meets code requirements |
| Supplier | Supplier reputation, product authenticity, and technical help | Reduces risk of counterfeit parts and improves after-sale support |
| Warranty & Pricing | Coverage limits, pricing visibility, and replacement support | Protects investment and clarifies purchase cost |
Conclusion
ASSE 1022 double-check valves can be space-saving solutions for low-risk backflow prevention when approved by the local authority. An Asse 1022 Dual Check Valve uses two spring-loaded check mechanisms and approved materials that may meet NSF/ANSI 61 and ASSE requirements. This helps reduce contamination risks in irrigation and some HVAC makeup lines.
Choosing the right device depends on hazard level and code compliance. An Asse 1022 Backflow Preventer is appropriate for low-hazard scenarios where it is allowed. For high-hazard protection, use ASSE 1013, ASSE 1024, or reduced-pressure assemblies. Correct selection can simplify permitting, reduce rework, and improve potable-water protection.
To ensure backflow prevention compliance, follow manufacturer guidelines and local plumbing codes. Where applicable, this may include the 2018 UPC, local amendments, and water authority rules. Buy certified products from trusted suppliers or authorized dealers. Confirm ASSE listings, NSF/ANSI 61 certification, and UL or FM approvals when those marks are required.
Reliable backflow protection depends on correct selection, accurate installation, and routine maintenance. When supported by certified devices and qualified testers, these steps help protect potable water. They also make regulatory acceptance, inspection, and documentation easier. Following these practices helps an Asse 1022 Dual Check Valve or other approved backflow solution perform reliably over time.
